I don't know if you have rf2 but the skins were made for it and nobody else is saying anything about it or the cars being dark on a side. Another guy said the same thing about the materials and I myself have used modeling programs also including blender so I can relate to what you're saying. It's just that nobody has said anything and the skins have been out for some time. Here's a link to the set I subscribed to on steam:Classic StocksAlpha channels?